Unknown option: "-3" Unix manual page for CURLOPT_TIMEVALUE. (host=minya system=Darwin)
CURLOPT_TIMEVALUE(3)       curl_easy_setopt options       CURLOPT_TIMEVALUE(3)

NAME
       CURLOPT_TIMEVALUE - set time value for conditional

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TIMEVALUE, long val);

DESCRIPTION
       Pass  a  long val as parameter. This should be the time counted as sec-
       onds since 1 Jan 1970, and the time will be  used  in  a  condition  as
       specified with CURLOPT_TIMECONDITION(3).

DEFAULT
       0

PROTOCOLS
       HTTP, FTP, RTSP, and FILE

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl) {
         curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");

         /* January 1, 2020 is 1577833200 */
         curl_easy_setopt(curl, CURLOPT_TIMEVALUE, 1577833200L);

         /* If-Modified-Since the above time stamp */
         curl_easy_setopt(curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_IFMODSINCE);

         /* Perform the request */
         curl_easy_perform(curl);
       }

AVAILABILITY
       Always

RETURN VALUE
       Returns CURLE_OK

SEE ALSO
       CURLOPT_TIMECONDITION(3),

libcurl 7.54.0                  April 03, 2016            CURLOPT_TIMEVALUE(3)